107 entries under tough topic. ×

2
condensed(adjective, hard, solid, rigid)
2
grim(adjective, hard, harsh, cruel)
2
hard-bitten(adjective, strong, hard, careless)
2
hard-hearted(adjective, hard, severe, harsh)
2
hardy(adjective, strong)
2
harsh(adjective, hard, cruel, grim)
2
implacable(adjective, hard, harsh, cruel)
2
insensate(noun, adjective, hard, severe)
2
resistant(adjective, strong, hard, fit)
2
severe(adjective, hard, cruel, unsympathetic)
2
unmerciful(adjective, hard, harsh, cruel)
2
unrepenting(adjective, hard, harsh, cruel)
1
asleep(adjective, hard, severe, cruel)
1
avaricious(adjective, hard, harsh, sophisticated)
1
barbarous(adjective, hard, harsh, cold)
1
benumbed(verb, adjective, hard, severe)
1
bloody(adjective, hard, harsh, cruel)
1
brutal(adjective, hard, severe, cold)
1
cantankerous(adjective, hard, severe, cruel)
1
churlish(adjective, hard, severe, cruel)
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APASmart Define. (2016). hardened thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms
ChicagoSmart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, hardened thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>.
MLASmart Define. "hardened thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms>